Move return value outside try-finally block

The return value is for Glib/GTK event loop, so it should be after
try-finally sequence. The value needs to be returned every time and we
really like to have threads_enter()/threads_leave() to be invoked in
pairs.

pyfpdb/HUD_main.py

@@ -122,10 +122,9 @@ class HUD_main(object):
                     m.update_gui(new_hand_id)
                 self.hud_dict[table_name].update(new_hand_id, self.config)
                 self.hud_dict[table_name].reposition_windows()
-                gtk.gdk.threads_leave()
-                return False
             finally:
                 gtk.gdk.threads_leave()
+            return False
 
         self.hud_dict[table_name] = Hud.Hud(self, table, max, poker_game, self.config, self.db_connection)
         self.hud_dict[table_name].table_name = table_name